/* ═══════════════════════════════════════════════════════════════
   Thiên Thu Group — giao diện công khai
   Sơn mài · đỏ son · vàng đồng · giấy dó
   ═══════════════════════════════════════════════════════════════ */

@font-face { font-family: "TT Serif"; src: url(/fonts/serif-display.woff2) format("woff2"); font-weight: 300 600; font-style: normal; font-display: swap; }
@font-face { font-family: "TT Serif"; src: url(/fonts/serif-display-italic.woff2) format("woff2"); font-weight: 300 600; font-style: italic; font-display: swap; }
@font-face { font-family: "TT Sans"; src: url(/fonts/be-vietnam-300.woff2) format("woff2"); font-weight: 300; font-display: swap; }
@font-face { font-family: "TT Sans"; src: url(/fonts/be-vietnam-400.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "TT Sans"; src: url(/fonts/be-vietnam-500.woff2) format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "TT Sans"; src: url(/fonts/be-vietnam-600.woff2) format("woff2"); font-weight: 600; font-display: swap; }
/* Phông dự phòng có số đo gần giống để chữ không nhảy khi tải xong. */
@font-face { font-family: "TT Serif Fallback"; src: local("Georgia"), local("Times New Roman"); size-adjust: 96%; ascent-override: 104%; descent-override: 30%; }
@font-face { font-family: "TT Sans Fallback"; src: local("Segoe UI"), local("Roboto"), local("Arial"); size-adjust: 104%; ascent-override: 98%; descent-override: 26%; }

:root {
  --ink: #14100d;
  --ink-2: #1c1612;
  --ink-3: #2a211b;
  --lacquer: #3d0c10;
  --son: #631019;
  --cinnabar: #a3201b;
  --gold: #b28c2e;
  --gold-2: #c9a45c;
  --gold-3: #e9d3a1;
  --gold-ink: #7a5a17;
  --paper: #f3ede2;
  --paper-2: #ebe3d4;
  --paper-3: #ddd1bb;
  --text: #1d1813;
  --text-2: #54493f;
  --text-3: #7b6e61;
  --on-dark: #efe7d8;
  --on-dark-2: rgba(239, 231, 216, .68);
  --line: rgba(29, 24, 19, .14);
  --line-2: rgba(29, 24, 19, .26);
  --line-dark: rgba(233, 211, 161, .16);
  --serif: "TT Serif", "TT Serif Fallback", Georgia, "Times New Roman", serif;
  --sans: "TT Sans", "TT Sans Fallback", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --gutter: clamp(20px, 5.2vw, 84px);
  --max: 1440px;
  --mast: 84px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-io: cubic-bezier(.65, 0, .35, 1);
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .3 0 0 0 0 .22 0 0 0 0 .14 0 0 0 .07 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ── Nền ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 90px; }
@view-transition { navigation: auto; }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font: 400 1rem/1.72 var(--sans); font-kerning: normal;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
picture { display: contents; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
::selection { background: var(--gold-3); color: var(--ink); }
:focus-visible { outline: 2px solid var(--gold-2); outline-offset: 3px; }
[hidden] { display: none !important; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 200; background: var(--ink); color: var(--paper); padding: 10px 16px; transition: top .2s; }
.skip:focus { top: 12px; }
.wrap { width: 100%; max-width: calc(var(--max) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.ic { width: 18px; height: 18px; flex: none; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ── Chữ ─────────────────────────────────────────────────────── */
.h-xl, .h-l, .h-m, .hero-title, .gate-title {
  font-family: var(--serif); font-weight: 380; letter-spacing: -.018em; text-wrap: balance;
  font-feature-settings: "kern", "liga", "lnum";
}
.h-xl { font-size: clamp(2.35rem, 1.2rem + 3.9vw, 5.1rem); line-height: 1.06; }
.h-l { font-size: clamp(1.8rem, 1.1rem + 2vw, 3.1rem); line-height: 1.1; }
.h-m { font-size: clamp(1.45rem, 1.1rem + 1vw, 2.05rem); line-height: 1.18; }
.h-xl em, .h-l em, .h-m em { font-style: italic; font-weight: 340; color: var(--gold-ink); }
.label {
  display: flex; align-items: center; gap: 14px; margin-bottom: 22px;
  font: 500 .72rem/1.3 var(--sans); letter-spacing: .22em; text-transform: uppercase; color: var(--gold-ink);
}
.label .rule, .eyebrow .rule { width: 34px; height: 1px; background: currentColor; flex: none; opacity: .8; }
.label-light { color: var(--gold-2); }
.meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font: 500 .72rem/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); }
.meta a { color: var(--gold-ink); }
.meta a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ── Nút & liên kết ─────────────────────────────────────────── */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 52px; padding: 0 26px; overflow: hidden; isolation: isolate;
  font: 500 .92rem/1 var(--sans); letter-spacing: .02em; white-space: nowrap;
  border: 1px solid transparent; transition: background-color .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
}
.btn::after { /* vệt sáng lướt qua khi rê chuột */
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(105deg, transparent 30%, rgba(255, 246, 220, .55) 48%, transparent 66%);
  transform: translateX(-120%); transition: transform .8s var(--ease);
}
.btn:hover::after { transform: translateX(120%); }
.btn .ic { transition: transform .35s var(--ease); }
.btn:hover .ic { transform: translateX(3px); }
.btn-gold { background: var(--gold-2); color: var(--ink); border-color: var(--gold-2); }
.btn-gold:hover { background: var(--gold-3); border-color: var(--gold-3); }
.btn-ghost { color: var(--on-dark); border-color: rgba(239, 231, 216, .38); }
.btn-ghost:hover { border-color: var(--gold-2); color: var(--gold-3); }
.btn-ink { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-ink:hover { background: var(--son); border-color: var(--son); }
.btn-line { color: var(--text); border-color: var(--line-2); }
.btn-line:hover { border-color: var(--text); }
.btn-lg { min-height: 60px; padding: 0 32px; font-size: 1rem; }
.btn-block { width: 100%; }
.link-arrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 0;
  font: 500 .9rem/1.3 var(--sans); color: var(--text);
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  transition: background-size .45s var(--ease), color .3s;
}
.link-arrow:hover { background-size: 0 1px; background-position: 100% 100%; color: var(--gold-ink); }
.link-arrow .ic { width: 16px; height: 16px; transition: transform .35s var(--ease); }
.link-arrow:hover .ic { transform: translateX(4px); }
.link-light { color: var(--on-dark); }
.link-light:hover { color: var(--gold-3); }
.linkish { text-decoration: underline; text-underline-offset: 3px; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border: 1px solid var(--line-2); font: 500 .7rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--gold-ink); }
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }

/* ── Đầu trang ──────────────────────────────────────────────── */
.mast {
  position: fixed; inset: 0 0 auto; z-index: 60; height: var(--mast); color: var(--on-dark);
  transition: transform .5s var(--ease), background-color .4s var(--ease), height .4s var(--ease), box-shadow .4s;
}
.mast::before { content: ""; position: absolute; inset: 0 0 -40px; background: linear-gradient(rgba(10, 8, 6, .55), transparent); pointer-events: none; transition: opacity .4s; }
.mast.is-solid { background: rgba(20, 16, 13, .97); height: 68px; box-shadow: 0 1px 0 var(--line-dark); }
.mast.is-solid::before { opacity: 0; }
.mast.is-hidden { transform: translateY(-100%); }
.mast-in { position: relative; height: 100%; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 14px; flex: none; }
.brand-emblem { width: 46px; height: 46px; transition: width .4s var(--ease), height .4s var(--ease); }
.brand-emblem .disc { fill: var(--son); }
.brand-emblem .ring, .brand-emblem .tl { fill: var(--gold); }
.brand-word { height: 21px; width: auto; aspect-ratio: 937 / 195; fill: var(--gold-2); }
.mast.is-solid .brand-emblem { width: 38px; height: 38px; }
.brand:hover .ring { transform-origin: 212px 212px; animation: spin 6s linear infinite; }
.nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 38px); margin-left: auto; font: 400 .9rem/1 var(--sans); }
.nav > a, .nav-mega-btn { position: relative; display: inline-flex; align-items: center; gap: 6px; padding: 12px 0; color: var(--on-dark-2); transition: color .25s; }
.nav > a:hover, .nav-mega-btn:hover, .nav [aria-current="page"] { color: var(--on-dark); }
.nav [aria-current="page"]::after { content: ""; position: absolute; left: 50%; bottom: 2px; width: 4px; height: 4px; margin-left: -2px; border-radius: 50%; background: var(--gold-2); }
.chev { width: 14px; height: 14px; transition: transform .3s; }
.nav-mega:hover .chev, .nav-mega.is-open .chev { transform: rotate(180deg); }
.mast-act { display: flex; align-items: center; gap: 14px; }
.mast-tel, .mast-care {
  display: inline-flex; align-items: center; gap: 10px; padding: 9px 16px 9px 12px; border: 1px solid rgba(201, 164, 92, .5);
  font: 500 .85rem/1.15 var(--sans); color: var(--gold-3); transition: background-color .3s, color .3s;
}
.mast-tel small { display: block; font-size: .65rem; letter-spacing: .14em; text-transform: uppercase; color: var(--on-dark-2); font-weight: 400; }
.mast-tel:hover, .mast-care:hover { background: var(--gold-2); color: var(--ink); }
.mast-tel:hover small { color: var(--ink); }
.menu-btn { display: none; align-items: center; gap: 10px; padding: 10px 0 10px 6px; font: 500 .82rem/1 var(--sans); letter-spacing: .06em; }
.menu-lines { position: relative; width: 26px; height: 12px; }
.menu-lines i { position: absolute; left: 0; height: 1.5px; background: currentColor; transition: transform .4s var(--ease), width .4s var(--ease), top .4s var(--ease); }
.menu-lines i:first-child { top: 1px; width: 26px; }
.menu-lines i:last-child { top: 9px; width: 18px; left: 8px; }
.menu-open .menu-lines i:first-child { top: 5px; transform: rotate(45deg); }
.menu-open .menu-lines i:last-child { top: 5px; left: 0; width: 26px; transform: rotate(-45deg); }

/* Bảng lĩnh vực xổ xuống */
.nav-mega { position: static; }
.mega {
  position: absolute; left: 0; right: 0; top: 100%; display: none;
  background: var(--ink-2); box-shadow: 0 1px 0 var(--line-dark), 0 30px 60px -20px rgba(0, 0, 0, .5);
  border-top: 1px solid var(--line-dark);
}
.nav-mega:hover .mega, .nav-mega:focus-within .mega, .nav-mega.is-open .mega { display: block; animation: megaIn .45s var(--ease-out); }
.mast:has(.nav-mega:hover), .mast:has(.nav-mega:focus-within) { background: rgba(20, 16, 13, .97); }
@keyframes megaIn { from { opacity: 0; transform: translateY(-8px); } }
.mega-in { display: grid; grid-template-columns: 1.1fr repeat(4, 1fr); gap: 28px; padding-block: 34px 40px; }
.mega-note { font: 380 1.35rem/1.35 var(--serif); color: var(--on-dark); max-width: 15em; }
.mega-note .label { display: flex; margin-bottom: 14px; color: var(--gold-2); }
.mega-item { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; align-content: start; }
.mega-img { grid-column: 1 / -1; aspect-ratio: 16 / 10; overflow: hidden; margin-bottom: 12px; background: var(--ink-3); }
.mega-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease-out), filter .6s; filter: saturate(.85) brightness(.9); }
.mega-item:hover .mega-img img { transform: scale(1.06); filter: none; }
.mega-no { font: 500 .7rem/1.9 var(--sans); letter-spacing: .1em; color: var(--gold-2); }
.mega-name { font: 400 1.12rem/1.3 var(--serif); color: var(--on-dark); }
.mega-kick { grid-column: 2; font-size: .8rem; color: var(--on-dark-2); }

/* Danh mục trên điện thoại */
.menu {
  position: fixed; inset: 0; z-index: 55; overflow-y: auto; overscroll-behavior: contain;
  background: var(--ink) radial-gradient(120% 70% at 100% 0%, rgba(99, 16, 25, .5), transparent 60%);
  color: var(--on-dark); padding: calc(var(--mast) + 20px) var(--gutter) 32px;
}
.menu.is-in { animation: menuIn .5s var(--ease-out); }
@keyframes menuIn { from { opacity: 0; clip-path: inset(0 0 100% 0); } to { opacity: 1; clip-path: inset(0); } }
.menu-in { min-height: 100%; display: flex; flex-direction: column; gap: 40px; justify-content: space-between; }
.menu-nav { display: grid; }
.menu-nav > a { display: flex; align-items: baseline; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line-dark); font: 360 clamp(1.9rem, 8vw, 2.6rem)/1.15 var(--serif); }
.menu-nav > a span { font: 500 .7rem/1 var(--sans); letter-spacing: .1em; color: var(--gold-2); width: 22px; }
.menu-sub { display: grid; padding: 10px 0 12px 38px; border-bottom: 1px solid var(--line-dark); }
.menu-sub a { padding: 7px 0; color: var(--on-dark-2); font-size: .98rem; }
.menu-foot { display: grid; gap: 14px; }
.menu-tel { display: flex; align-items: center; gap: 12px; font: 400 1.6rem/1 var(--serif); color: var(--gold-3); }
.menu-hours { display: flex; gap: 10px; align-items: center; font-size: .85rem; color: var(--on-dark-2); }
body.menu-open { overflow: hidden; }

/* ═══ Cổng âm dương ════════════════════════════════════════════ */
.gate { display: none; }
html.gate-on .gate { display: block; position: fixed; inset: 0; z-index: 100; color: var(--on-dark); }
html.gate-on.js-ok body { overflow: hidden; }
html.gate-on.js-ok .mast { opacity: 0; }
html.gate-on:not(.js-ok) .gate { animation: gateFail .6s 6s forwards; }
@keyframes gateFail { to { opacity: 0; visibility: hidden; } }
.gate-stage { position: absolute; inset: 0; perspective: 1500px; perspective-origin: 50% 46%; overflow: hidden; }
.gate-light { /* ánh sáng phía sau cửa: trời sáng tràn vào khi cửa hé */
  position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(60% 75% at 50% 46%, #fff8e6 0%, #ffe2a8 22%, rgba(255, 196, 120, .55) 46%, rgba(255, 170, 90, 0) 75%);
}
.door { position: absolute; top: 0; bottom: 0; width: 50.1%; transform-style: preserve-3d; will-change: transform; backface-visibility: hidden; }
.door-l { left: 0; transform-origin: 0 50%; }
.door-r { right: 0; transform-origin: 100% 50%; }
.door-clip { position: absolute; inset: 0; overflow: hidden; }
.plate { position: absolute; top: 0; bottom: 0; width: 199.6%; overflow: hidden; background: #2a1d14; }
.door-l .plate { left: 0; }
.door-r .plate { right: 0; }
.plate img, .runes { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.runes { mix-blend-mode: screen; pointer-events: none; }
.runes-port { display: none; }
@media (max-width: 640px) and (orientation: portrait) { .runes-land { display: none; } .runes-port { display: block; } }
.r-halo { fill: none; stroke: #ffd98f; stroke-width: 5; stroke-dasharray: 1; stroke-dashoffset: 1; opacity: 0; filter: drop-shadow(0 0 8px #ffb34d); }
.r-halo-in { stroke-width: 3.5; }
.r-gua ellipse { fill: url(#gg-gold); opacity: 0; }
.r-stones circle { opacity: 0; }
.r-stones .s-moc { fill: url(#gg-moc); } .r-stones .s-hoa { fill: url(#gg-hoa); } .r-stones .s-tho { fill: url(#gg-tho); }
.r-stones .s-kim { fill: url(#gg-kim); } .r-stones .s-thuy { fill: url(#gg-thuy); }
.r-lamps circle { fill: url(#gg-lamp); opacity: .55; animation: flicker 3.2s steps(1) infinite; }
@keyframes flicker { 0%, 100% { opacity: .55; } 12% { opacity: .62; } 24% { opacity: .5; } 41% { opacity: .66; } 57% { opacity: .52; } 73% { opacity: .6; } 88% { opacity: .54; } }
.door-shade { position: absolute; inset: 0; opacity: 0; background: linear-gradient(90deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, .35)); }
.door-r .door-shade { background: linear-gradient(270deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, .35)); }
.door-edge { /* bề dày cánh cửa đồng, chỉ lộ ra khi cánh xoay */
  position: absolute; top: 0; bottom: 0; width: 34px;
  background: linear-gradient(90deg, #3b2716, #8a5f2c 30%, #c99a52 50%, #6b4521 75%, #2c1d10);
}
.door-l .door-edge { right: 0; transform-origin: 100% 50%; transform: rotateY(-90deg); }
.door-r .door-edge { left: 0; transform-origin: 0 50%; transform: rotateY(90deg); }
.seam {
  position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; margin-left: -1px; opacity: .5;
  background: linear-gradient(180deg, transparent, #ffd48a 18%, #fff3d6 50%, #ffd48a 82%, transparent);
  box-shadow: 0 0 18px 2px rgba(255, 190, 100, .55); animation: seamBreath 4s ease-in-out infinite;
}
@keyframes seamBreath { 50% { opacity: .8; } }
.beam {
  position: absolute; left: 50%; top: -10%; bottom: -10%; width: 60vw; margin-left: -30vw; opacity: 0; pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, rgba(255, 244, 214, .95), rgba(255, 214, 140, .4) 40%, transparent 72%);
  transform: scaleX(.02); mix-blend-mode: screen;
}
.mist { position: absolute; inset: -20% -40%; opacity: 0; pointer-events: none; background: url(/img/suong.webp) center / 60% auto repeat-x; filter: brightness(1.4); }
.mist-b { background-size: 80% auto; transform: scaleX(-1); }
.mist-c { background-size: 110% auto; background-position: 30% 70%; }
.gate-vignette { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(120% 90% at 50% 45%, transparent 55%, rgba(5, 4, 3, .75)), linear-gradient(transparent 62%, rgba(8, 6, 4, .88)); }
.gate-ui { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: space-between; pointer-events: none; }
.gate-ui > * { pointer-events: auto; }
.gate-top { display: flex; align-items: center; justify-content: space-between; height: var(--mast); }
.gate-logo { display: flex; align-items: center; gap: 14px; }
.gate-logo .brand-emblem .ring { transform-origin: 212px 212px; }
.gate-skip { display: inline-flex; align-items: center; gap: 10px; padding: 12px 0; font: 500 .85rem/1 var(--sans); color: var(--on-dark); border-bottom: 1px solid rgba(239, 231, 216, .35); }
.gate-skip:hover { color: var(--gold-3); border-color: var(--gold-3); }
.gate-center { display: grid; justify-items: center; text-align: center; gap: 14px; padding: 0 var(--gutter) clamp(28px, 6vh, 64px); }
.gate-eyebrow { font: 500 .72rem/1 var(--sans); letter-spacing: .3em; text-transform: uppercase; color: var(--gold-3); }
.gate-title { font-size: clamp(2.4rem, 1.4rem + 3.6vw, 5rem); line-height: 1.08; color: #f7efdf; text-shadow: 0 2px 30px rgba(0, 0, 0, .6); }
.gate-title em { font-style: italic; font-weight: 340; color: var(--gold-3); }
.gate-note { max-width: 34em; font-size: .92rem; color: var(--on-dark-2); }
.gate-open {
  position: relative; margin-top: 8px; display: inline-flex; align-items: center; gap: 14px; padding: 18px 34px;
  font: 500 .95rem/1 var(--sans); letter-spacing: .06em; color: var(--ink); background: var(--gold-3);
  outline: 1px solid rgba(233, 211, 161, .6); outline-offset: 5px; transition: background-color .3s, outline-offset .4s var(--ease);
}
.gate-open:hover { background: #fff1cf; outline-offset: 8px; }
.gate-open::before { content: ""; position: absolute; inset: -5px; border: 1px solid rgba(255, 220, 150, .7); animation: pulseRing 2.6s var(--ease) infinite; pointer-events: none; }
@keyframes pulseRing { 0% { opacity: .9; transform: scale(1); } 80%, 100% { opacity: 0; transform: scale(1.16, 1.5); } }
.gate-hint { display: flex; align-items: center; gap: 10px; font-size: .75rem; letter-spacing: .08em; color: var(--on-dark-2); }
.gate-hint span { width: 1px; height: 22px; background: linear-gradient(transparent, var(--gold-3)); animation: drip 2s var(--ease) infinite; }
@keyframes drip { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
.gate.is-opening .gate-hint, .gate.is-opening .gate-open::before { display: none; }
html.lite .gate .mist, html.lite .r-lamps circle, html.lite .seam { animation: none; }

/* ═══ Mặt hồ (hero) ═════════════════════════════════════════════ */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: grid; grid-template-rows: 1fr auto auto; color: var(--on-dark); background: #10140f; overflow: hidden; isolation: isolate; }
.hero-media { position: absolute; inset: 0; z-index: -3; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 50%; transform-origin: 70% 55%; will-change: transform; }
.hero-mist { position: absolute; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; opacity: .55; }
.hero-mist i { position: absolute; left: -50%; width: 200%; height: 60%; background: url(/img/suong.webp) 0 50% / 50% auto repeat-x; animation: drift 90s linear infinite; }
.hero-mist i:first-child { top: 38%; opacity: .5; }
.hero-mist i:last-child { top: 55%; opacity: .35; animation-duration: 140s; animation-direction: reverse; background-size: 70% auto; }
@keyframes drift { to { transform: translateX(25%); } }
html.lite .hero-mist { display: none; }
.hero-shade { position: absolute; inset: 0; z-index: -1; background:
  linear-gradient(90deg, rgba(9, 11, 9, .82) 0%, rgba(9, 11, 9, .58) 30%, rgba(9, 11, 9, .12) 58%, transparent 75%),
  linear-gradient(180deg, transparent 55%, rgba(8, 9, 7, .78) 100%); }
.hero-body { display: flex; align-items: center; gap: 32px; padding-top: calc(var(--mast) + 40px); padding-bottom: 32px; }
.hero-copy { max-width: 680px; }
.eyebrow { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; font: 500 .74rem/1.2 var(--sans); letter-spacing: .26em; text-transform: uppercase; color: var(--gold-3); }
.hero-title { font-size: clamp(3.15rem, 1.5rem + 5.6vw, 7.4rem); line-height: .98; color: #f6eedf; }
.hero-title .ln { display: block; overflow: hidden; padding: .16em .04em .1em 0; margin: -.16em 0 -.1em; }
.hero-title .ln > * { display: inline-block; }
.hero-title em {
  font-style: italic; font-weight: 330; padding-right: .06em;
  background: linear-gradient(100deg, #f3dfae 0%, #c9a45c 38%, #fff0c8 52%, #b28c2e 72%, #e9d3a1 100%) 0 0 / 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { max-width: 33em; margin-top: 28px; font-size: clamp(1rem, .95rem + .2vw, 1.12rem); line-height: 1.7; color: rgba(239, 231, 216, .84); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-copy { position: relative; }
.hero-seal { position: absolute; left: calc(100% + 18px); top: 64px; width: clamp(40px, 3.4vw, 54px); height: auto; opacity: .94; filter: drop-shadow(0 6px 18px rgba(0, 0, 0, .35)); }
.hero-index { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(239, 231, 216, .2); }
.hero-index a { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; padding: 22px 20px 20px 0; transition: color .3s; }
.hero-index a + a { padding-left: 22px; border-left: 1px solid rgba(239, 231, 216, .12); }
.hero-index a::before { content: ""; position: absolute; top: -1px; left: 0; right: 0; height: 1px; background: var(--gold-2); transform: scaleX(0); transform-origin: left; transition: transform .6s var(--ease); }
.hero-index a:hover::before { transform: scaleX(1); }
.hi-no { grid-row: span 2; font: 500 .7rem/1.9 var(--sans); letter-spacing: .1em; color: var(--gold-2); }
.hi-name { font: 400 1.12rem/1.3 var(--serif); }
.hi-kick { font-size: .8rem; color: var(--on-dark-2); }
.hero-foot { display: flex; justify-content: space-between; align-items: center; padding-block: 0 22px; font-size: .72rem; letter-spacing: .1em; color: rgba(239, 231, 216, .55); }
.scroll-cue { display: inline-flex; align-items: center; gap: 12px; text-transform: uppercase; letter-spacing: .2em; }
.scroll-cue i { position: relative; width: 1px; height: 30px; background: rgba(239, 231, 216, .25); overflow: hidden; }
.scroll-cue i::after { content: ""; position: absolute; inset: 0; background: var(--gold-3); animation: drip 2.2s var(--ease) infinite; }
/* Hiện dần nội dung mặt hồ sau khi bước qua cổng */
.js [data-intro] { opacity: 0; transform: translateY(26px); }
.js .hero-title .ln[data-intro] { opacity: 1; transform: none; }
.js .hero-title .ln[data-intro] > * { transform: translateY(105%); }
.js.intro-go [data-intro] { opacity: 1; transform: none; transition: opacity 1s var(--ease-out), transform 1.2s var(--ease-out); transition-delay: calc(var(--n, 0) * 110ms); }
.js.intro-go .hero-title .ln[data-intro] > * { transform: none; transition: transform 1.3s var(--ease-out); transition-delay: calc(var(--n, 0) * 110ms); }
.js.intro-go .hero-title em { animation: sheen 3.2s var(--ease) .9s both; }
@keyframes sheen { from { background-position: 100% 0; } to { background-position: 0 0; } }

/* ═══ Tinh thần ═════════════════════════════════════════════════ */
.manifesto { position: relative; padding-block: clamp(80px, 11vw, 160px) clamp(70px, 9vw, 130px); background: var(--paper) var(--grain); }
.mf-grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 6vw, 110px); }
.mf-side { position: sticky; top: 110px; align-self: start; }
.mf-emblem { width: min(260px, 70%); aspect-ratio: 1; margin: 18px 0 26px; }
.mf-emblem svg { width: 100%; height: 100%; overflow: visible; }
.mf-emblem .disc { fill: var(--son); }
.mf-emblem .ring, .mf-emblem .tl { fill: var(--gold); }
.mf-emblem .ring { transform-origin: 212px 212px; transform: rotate(var(--spin, 0deg)); }
.mf-han { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; font: 400 1.02rem/1.4 var(--serif); color: var(--text-2); }
.mf-han [lang="zh"] { font-family: "Kaiti SC", "STKaiti", "KaiTi", "Noto Serif CJK SC", "Songti SC", serif; font-size: 1.6rem; color: var(--son); letter-spacing: .1em; }
.mf-han em { font-style: italic; color: var(--gold-ink); }
.mf-text { font: 360 clamp(1.6rem, 1rem + 1.95vw, 2.85rem)/1.32 var(--serif); letter-spacing: -.01em; color: var(--text); text-wrap: pretty; }
.mf-text .w { transition: color .5s var(--ease), opacity .5s var(--ease); }
.js .mf-text .w { color: var(--paper-3); }
.js .mf-text .w.on { color: var(--text); }
.values { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: clamp(48px, 6vw, 84px); border-top: 1px solid var(--line-2); }
.values li { padding: 26px 26px 6px 0; }
.values li + li { padding-left: 26px; border-left: 1px solid var(--line); }
.v-no { display: block; margin-bottom: 18px; font: italic 400 .95rem/1 var(--serif); color: var(--cinnabar); }
.values h3 { font: 400 1.5rem/1.2 var(--serif); margin-bottom: 10px; }
.values p { font-size: .94rem; color: var(--text-2); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 24px; margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); }
.stats dd { font: 340 clamp(2.4rem, 1.6rem + 2vw, 3.6rem)/1 var(--serif); color: var(--son); }
.stats dt { order: 2; font-size: .85rem; color: var(--text-2); margin-top: 8px; }
.stats div { display: flex; flex-direction: column-reverse; }

/* ═══ Hệ sinh thái ══════════════════════════════════════════════ */
.eco { padding-block: clamp(70px, 9vw, 140px); background: var(--paper-2) var(--grain); }
.eco-head { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 24px 48px; align-items: end; margin-bottom: clamp(48px, 6vw, 96px); }
.eco-head .label { grid-column: 1 / -1; margin-bottom: 0; }
.eco-lead { max-width: 34em; color: var(--text-2); font-size: 1.04rem; padding-bottom: .5em; }
.eco-grid { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 6vw, 110px); align-items: start; }
.eco-index { position: sticky; top: 108px; }
.eco-nav { display: grid; border-top: 1px solid var(--line-2); }
.eco-nav a { display: grid; grid-template-columns: 34px 1fr; gap: 2px 8px; padding: 18px 0; border-bottom: 1px solid var(--line); color: var(--text-3); transition: color .35s var(--ease); }
.en-no { grid-row: span 2; font: 500 .72rem/2.3 var(--sans); letter-spacing: .1em; }
.en-name { font: 400 clamp(1.25rem, 1rem + .6vw, 1.6rem)/1.25 var(--serif); }
.en-kick { font-size: .8rem; max-height: 0; overflow: hidden; opacity: 0; transition: max-height .5s var(--ease), opacity .5s; }
.eco-nav a:hover { color: var(--text); }
.eco-nav a[aria-current="true"] { color: var(--text); }
.eco-nav a[aria-current="true"] .en-no { color: var(--cinnabar); }
.eco-nav a[aria-current="true"] .en-kick { max-height: 2em; opacity: 1; color: var(--text-2); }
.flow { width: 100%; max-width: 340px; margin-top: 34px; color: var(--gold); overflow: visible; }
.eco-count { display: flex; align-items: center; gap: 12px; margin-top: 18px; font: 400 .9rem/1 var(--serif); color: var(--text-3); }
.eco-count span { font-size: 2.3rem; color: var(--text); font-style: italic; }
.eco-count i { width: 40px; height: 1px; background: var(--line-2); }
.eco-chapters { display: grid; gap: clamp(72px, 9vw, 140px); }
.chapter { scroll-margin-top: 100px; }
.ch-fig { position: relative; }
.ch-img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--paper-3); }
.ch-img img { width: 100%; height: 112%; object-fit: cover; transform: translate3d(0, var(--py, -5%), 0); will-change: transform; }
.ch-objects .ch-img img { object-position: 50% 63%; }
.ch-care .ch-img img { object-position: 45% 42%; }
.ch-fig figcaption { display: flex; justify-content: space-between; gap: 20px; margin-top: 12px; font-size: .74rem; color: var(--text-3); }
.ch-fig figcaption span:first-child { letter-spacing: .16em; text-transform: uppercase; font-weight: 500; }
.ch-fig figcaption span:last-child { font: italic 400 .95rem/1.2 var(--serif); }
.ch-body { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 8px 40px; margin-top: 34px; }
.ch-kick { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; font: 500 .72rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--gold-ink); }
.ch-kick .ic { width: 22px; height: 22px; color: var(--gold); }
.ch-body h3 { grid-column: 1; margin-top: 10px; }
.ch-body h3 a:hover { color: var(--son); }
.ch-tag { grid-column: 1; font: italic 380 1.12rem/1.45 var(--serif); color: var(--text-2); margin-top: 10px; }
.ch-sum { grid-column: 2; grid-row: 2 / span 2; margin-top: 14px; color: var(--text-2); }
.ch-items { grid-column: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; margin-top: 14px; border-top: 1px solid var(--line); }
.ch-items li { position: relative; padding: 11px 0 11px 16px; border-bottom: 1px solid var(--line); font-size: .88rem; }
.ch-items li::before { content: ""; position: absolute; left: 0; top: 1.15em; width: 6px; height: 6px; border: 1px solid var(--gold); transform: rotate(45deg); }
.ch-links { grid-column: 2; display: flex; flex-wrap: wrap; gap: 6px 26px; margin-top: 18px; }
.link-ext { color: var(--son); }

/* ═══ Âm dương — huy hiệu 3D theo cuộn ═════════════════════════ */
.taiji { position: relative; height: 420vh; background: #0d0a08; color: var(--on-dark); }
.taiji-pin {
  position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden;
  background: radial-gradient(60% 70% at 66% 50%, rgba(99, 16, 25, .55) 0%, rgba(40, 12, 10, .45) 40%, transparent 72%), linear-gradient(#0d0a08, #120d0a);
}
.taiji-pin::before { content: ""; position: absolute; inset: 0; background: var(--grain); opacity: .5; mix-blend-mode: overlay; pointer-events: none; }
.taiji-stage { --S: min(86vh, 54vw); position: absolute; left: 66%; top: 52%; width: var(--S); height: var(--S); margin: calc(var(--S) / -2) 0 0 calc(var(--S) / -2); }
.luopan { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; color: var(--gold-2); transform: rotate(var(--lp, 0deg)); }
.luopan .lp-line { fill: none; stroke: currentColor; stroke-width: 1.2; opacity: .45; }
.luopan .lp-faint { opacity: .2; stroke-dasharray: 2 6; }
.lp-ticks line { stroke: currentColor; stroke-width: 1.2; opacity: .45; }
.lp-names text { fill: currentColor; font: 400 15px var(--serif); text-anchor: middle; opacity: .75; letter-spacing: .04em; }
.lp-dots circle { fill: currentColor; opacity: .6; }
.medallion { position: absolute; left: 20%; top: 20%; width: 60%; height: 60%; perspective: 1200px; }
.medallion-img, .medallion-gl { position: absolute; inset: 0; width: 100%; height: 100%; }
.medallion-img { transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .55)); border-radius: 50%; }
.medallion-gl { opacity: 0; transition: opacity .8s var(--ease); }
.medallion.gl-ready .medallion-gl { opacity: 1; }
.medallion.gl-ready .medallion-img { opacity: 0; transition: opacity .8s; }
.wuxing { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.wx-cycle { fill: none; stroke: var(--gold-2); stroke-width: 1; opacity: .25; stroke-dasharray: 1; stroke-dashoffset: var(--wx-ring, 1); }
.wx-star { fill: none; stroke: url(#wx-grad); stroke: var(--gold-3); stroke-width: 1.6; stroke-dasharray: 1; stroke-dashoffset: var(--wx-draw, 1); opacity: .85; filter: drop-shadow(0 0 6px rgba(255, 200, 120, .6)); }
.gua li { position: absolute; left: 50%; top: 50%; width: 0; height: 0; transform: rotate(var(--a)) translateY(calc(var(--S) * -.345)) rotate(calc(-1 * var(--a))); }
.gua span { position: absolute; transform: translate(-50%, -50%); display: grid; justify-items: center; white-space: nowrap; font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--on-dark-2); opacity: 0; transition: opacity .6s var(--ease), color .4s; }
.gua b { font: 400 1.05rem/1.1 var(--serif); letter-spacing: 0; text-transform: none; color: var(--gold-3); }
.gua li.on span { opacity: 1; }
.taiji-stage[data-step="2"] .gua li.on span { opacity: .3; }
.taiji-copy { position: absolute; inset: 0; pointer-events: none; display: flex; align-items: center; }
.tj-step { position: absolute; width: min(470px, 40vw); opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .9s var(--ease-out); pointer-events: none; }
.tj-step.on { opacity: 1; transform: none; pointer-events: auto; }
.tj-step .h-xl em, .tj-step .h-l em { color: var(--gold-2); }
.tj-step > p:not(.label) { margin-top: 22px; color: var(--on-dark-2); font-size: 1.02rem; max-width: 30em; }
.tj-step .link-arrow { margin-top: 22px; }
.wx-list { display: grid; gap: 2px; margin-top: 24px; border-top: 1px solid var(--line-dark); }
.wx-list button { width: 100%; display: grid; grid-template-columns: 14px 70px 1fr; align-items: center; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--line-dark); text-align: left; transition: color .3s, padding .4s var(--ease); }
.wx-list i { width: 12px; height: 12px; border-radius: 50%; box-shadow: 0 0 0 3px rgba(255, 255, 255, .04); }
.wx-list b { font: 400 1.15rem/1 var(--serif); }
.wx-list span { font-size: .8rem; color: var(--on-dark-2); }
.wx-list li.on button, .wx-list button:hover { padding-left: 8px; color: #fff; }
.wx-list li.on i { box-shadow: 0 0 0 3px rgba(255, 255, 255, .08), 0 0 16px 2px currentColor; }
[data-el="moc"] i { background: #4f9a4a; color: #6fd26a; } [data-el="hoa"] i { background: #c23a26; color: #ff5a3a; }
[data-el="tho"] i { background: #d6a23a; color: #ffc94a; } [data-el="kim"] i { background: #ece4d2; color: #fff; }
[data-el="thuy"] i { background: #1e3a5a; color: #4a9aff; }
.wx-line { font: italic 400 1rem/1.5 var(--serif) !important; color: var(--gold-3) !important; }
.tj-progress { position: absolute; left: var(--gutter); bottom: 34px; display: flex; gap: 8px; }
.tj-progress li { width: 34px; height: 2px; background: rgba(239, 231, 216, .16); overflow: hidden; }
.tj-progress li::after { content: ""; display: block; height: 100%; background: var(--gold-2); transform: scaleX(var(--f, 0)); transform-origin: left; }

/* ═══ Dự án (trang chủ) ════════════════════════════════════════ */
.proj-home { padding-block: clamp(80px, 10vw, 150px) clamp(60px, 8vw, 110px); background: var(--paper) var(--grain); }
.sec-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: clamp(36px, 5vw, 64px); }
.proj-feature { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: clamp(28px, 4vw, 64px); align-items: end; }
.pf-img { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--paper-3); }
.pf-img > div, .nh-img > div { height: 100%; }
.pf-img img, .nh-img img { width: 100%; height: 112%; object-fit: cover; transform: translate3d(0, var(--py, -5%), 0) scale(1.001); transition: filter .6s; }
.pf-img:hover img, .nh-img:hover img { filter: brightness(1.06); }
.pf-body { display: grid; gap: 18px; padding-bottom: 6px; }
.pf-body .chip { justify-self: start; }
.pf-body h3 a:hover { color: var(--son); }
.pf-body > p { color: var(--text-2); }
.facts { display: grid; border-top: 1px solid var(--line); }
.facts div { display: flex; justify-content: space-between; gap: 18px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: .88rem; }
.facts dt { color: var(--text-3); }
.facts dd { text-align: right; }
.proj-rows { margin-top: clamp(40px, 5vw, 70px); border-top: 1px solid var(--line-2); }
.proj-rows a { position: relative; display: grid; grid-template-columns: 60px 1fr auto 120px 24px; align-items: center; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); transition: padding .5s var(--ease); }
.proj-rows a:hover { padding-inline: 14px; background: var(--paper-2); }
.pr-no { font: 500 .72rem/1 var(--sans); letter-spacing: .1em; color: var(--gold-ink); }
.pr-name { font: 400 clamp(1.3rem, 1rem + 1vw, 2rem)/1.2 var(--serif); }
.pr-stage { font-size: .8rem; color: var(--text-3); }
.pr-thumb { width: 120px; aspect-ratio: 16 / 10; overflow: hidden; }
.pr-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* ═══ Hành trình tiễn đưa ═════════════════════════════════════ */
.journey { padding-block: clamp(80px, 10vw, 150px); background: var(--ink-2); color: var(--on-dark); position: relative; overflow: hidden; }
.journey::before { content: ""; position: absolute; inset: 0; background: radial-gradient(70% 60% at 0% 0%, rgba(99, 16, 25, .38), transparent 60%); pointer-events: none; }
.journey .h-xl em { color: var(--gold-2); }
.journey .label { color: var(--gold-2); }
.jr-grid { position: relative; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(40px, 7vw, 120px); align-items: start; }
.jr-lead { max-width: 34em; margin-top: 24px; color: var(--on-dark-2); font-size: 1.04rem; }
.jr-steps { position: relative; margin-top: clamp(40px, 5vw, 70px); padding-left: 64px; }
.jr-line { position: absolute; left: 0; top: 8px; bottom: 30px; width: 40px; height: calc(100% - 38px); overflow: visible; }
.jr-track { fill: none; stroke: rgba(233, 211, 161, .14); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.jr-ink { fill: none; stroke: var(--gold-2); stroke-width: 1.6; vector-effect: non-scaling-stroke; stroke-dasharray: 1; stroke-dashoffset: var(--jr, 1); }
.jr-step { position: relative; padding: 0 0 clamp(34px, 4vw, 52px); }
.jr-dot { position: absolute; left: -51px; top: 6px; width: 15px; height: 15px; border-radius: 50%; border: 1px solid rgba(233, 211, 161, .35); background: var(--ink-2); transition: background-color .5s, border-color .5s, box-shadow .5s; }
.jr-step.on .jr-dot { background: var(--gold-2); border-color: var(--gold-2); box-shadow: 0 0 0 5px rgba(201, 164, 92, .14); }
.jr-time { font: 500 .7rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--gold-2); }
.jr-step h3 { margin-top: 10px; font: 400 clamp(1.35rem, 1.1rem + .8vw, 1.85rem)/1.2 var(--serif); }
.jr-step p:last-child { margin-top: 8px; max-width: 36em; color: var(--on-dark-2); font-size: .96rem; }
.js .jr-step { opacity: .38; transition: opacity .6s var(--ease); }
.js .jr-step.on { opacity: 1; }
.jr-aside { position: sticky; top: 110px; }
.jr-card { padding: clamp(26px, 3vw, 40px); background: var(--lacquer) linear-gradient(160deg, rgba(255, 255, 255, .04), transparent 40%); border: 1px solid rgba(201, 164, 92, .28); box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .6); }
.jr-tel { display: block; margin: 6px 0 22px; font: 380 clamp(2rem, 1.4rem + 1.6vw, 2.9rem)/1.1 var(--serif); color: var(--gold-3); }
.jr-tel small { display: block; font: 400 .8rem/1.6 var(--sans); color: var(--on-dark-2); }
.jr-say { margin: 4px 0 20px; font: 380 1.3rem/1.4 var(--serif); }
.jr-hours { display: flex; gap: 10px; align-items: center; margin-top: 18px; font-size: .8rem; color: var(--on-dark-2); }
.quick { display: grid; gap: 12px; }
.fld { display: grid; gap: 6px; font-size: .78rem; letter-spacing: .04em; color: var(--on-dark-2); }
.fld input, .fld textarea, .fld select {
  width: 100%; min-height: 48px; padding: 12px 14px; background: rgba(0, 0, 0, .22); color: var(--on-dark);
  border: 1px solid rgba(233, 211, 161, .22); border-radius: 0; font-size: 1rem; transition: border-color .3s, background-color .3s;
}
.fld input:focus, .fld textarea:focus, .fld select:focus { outline: none; border-color: var(--gold-2); background: rgba(0, 0, 0, .32); }
.chk { display: flex; gap: 10px; align-items: flex-start; font-size: .78rem; line-height: 1.5; color: var(--on-dark-2); }
.chk input { width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--gold-2); flex: none; }
.chk a { text-decoration: underline; text-underline-offset: 2px; }
.form-msg { min-height: 1.2em; font-size: .85rem; }
.form-msg.ok { color: #b9e3a8; }
.form-msg.err { color: #ffb4a0; }

/* ═══ Tin tức (trang chủ) ═════════════════════════════════════ */
.news-home { padding-block: clamp(80px, 10vw, 150px); background: var(--paper) var(--grain); }
.nh-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.nh-img { display: block; aspect-ratio: 4 / 3; overflow: hidden; margin-bottom: 22px; background: var(--paper-3); }
.nh-lead h3 { margin-top: 12px; }
.nh-lead h3 a:hover, .nh-list h3 a:hover { color: var(--son); }
.nh-ex { margin-top: 12px; color: var(--text-2); max-width: 38em; }
.nh-list { border-top: 1px solid var(--line-2); }
.nh-list li { display: grid; grid-template-columns: 1fr 112px; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.nh-list h3 { margin-top: 8px; font: 400 1.28rem/1.3 var(--serif); }
.nh-list p:last-child { margin-top: 6px; font-size: .9rem; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nh-thumb { aspect-ratio: 1; overflow: hidden; background: var(--paper-3); }
.nh-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease-out); }
.nh-list li:hover .nh-thumb img { transform: scale(1.06); }

/* ═══ Lời mời liên hệ ═════════════════════════════════════════ */
.cta { position: relative; overflow: hidden; padding-block: clamp(90px, 12vw, 170px); background: var(--son) radial-gradient(90% 120% at 50% 120%, var(--cinnabar), transparent 65%); color: #f8eedb; text-align: center; isolation: isolate; }
.cta::before { content: ""; position: absolute; inset: 0; background: var(--grain); opacity: .9; mix-blend-mode: multiply; z-index: -1; }
.cta-mark { position: absolute; left: 50%; top: 50%; width: min(980px, 140vw); aspect-ratio: 1; transform: translate(-50%, -50%) rotate(var(--spin, 0deg)); z-index: -1; opacity: .09; }
.cta-mark svg { width: 100%; height: 100%; fill: var(--gold-3); }
.cta-in { display: grid; justify-items: center; gap: 22px; }
.cta-seal { width: 40px; opacity: .9; }
.cta .h-xl { color: #fbf3e2; }
.cta .h-xl em { color: var(--gold-3); }
.cta p { max-width: 36em; color: rgba(248, 238, 219, .8); }
.cta-act { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 10px; }
.cta .btn-ghost { border-color: rgba(248, 238, 219, .45); }
.cta-hours { display: flex; gap: 10px; align-items: center; font-size: .82rem; color: rgba(248, 238, 219, .66) !important; }

/* ═══ Chân trang ══════════════════════════════════════════════ */
.foot { position: relative; background: var(--ink); color: var(--on-dark-2); overflow: hidden; }
.foot-top { display: grid; grid-template-columns: minmax(0, 4fr) repeat(2, minmax(0, 2fr)) minmax(0, 3fr); gap: 40px; padding-block: clamp(60px, 7vw, 100px) 40px; }
.foot-logo { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.foot-about { max-width: 26em; font-size: .9rem; }
.foot-social { display: flex; gap: 10px; margin-top: 22px; }
.foot-social a { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid var(--line-dark); color: var(--on-dark); transition: border-color .3s, color .3s; }
.foot-social a:hover { border-color: var(--gold-2); color: var(--gold-3); }
.foot .label { color: var(--gold-2); margin-bottom: 18px; }
.foot-col { display: grid; align-content: start; gap: 4px; font-size: .9rem; }
.foot-col > a { display: flex; gap: 10px; padding: 5px 0; color: var(--on-dark-2); transition: color .25s; }
.foot-col > a:hover { color: var(--gold-3); }
.foot-col > a span { width: 22px; font-size: .7rem; color: var(--gold-2); padding-top: 3px; letter-spacing: .06em; }
.foot-contact p, .foot-contact a { display: flex; gap: 10px; align-items: flex-start; }
.foot-contact .ic { width: 16px; height: 16px; margin-top: 4px; color: var(--gold-2); }
.foot-tel { font: 380 1.9rem/1.2 var(--serif) !important; color: var(--gold-3) !important; margin-bottom: 6px; }
.foot-contact .link-arrow { color: var(--on-dark); margin-top: 8px; }
.foot-mark { padding-inline: var(--gutter); margin-bottom: -2.2vw; opacity: .06; }
.foot-mark svg { width: 100%; height: auto; fill: var(--gold-3); }
.foot-base { position: relative; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 28px; padding-block: 22px 28px; border-top: 1px solid var(--line-dark); font-size: .78rem; background: var(--ink); }
.foot-base a:hover, .foot-base button:hover { color: var(--gold-3); }
.call-fab { position: fixed; right: 16px; bottom: 16px; z-index: 50; display: none; align-items: center; gap: 10px; padding: 14px 18px; background: var(--gold-2); color: var(--ink); font: 600 .9rem/1 var(--sans); box-shadow: 0 14px 30px -10px rgba(0, 0, 0, .45); }

/* ═══ Trang con ═══════════════════════════════════════════════ */
.page-hero { position: relative; min-height: clamp(460px, 68vh, 760px); display: flex; align-items: flex-end; color: var(--on-dark); background: var(--ink); overflow: hidden; isolation: isolate; }
.page-hero.is-short { min-height: clamp(360px, 50vh, 520px); }
.page-hero.is-plain { min-height: 0; padding-top: calc(var(--mast) + 70px); background: var(--ink) radial-gradient(80% 120% at 85% 0%, rgba(99, 16, 25, .55), transparent 60%); }
.ph-media { position: absolute; inset: 0; z-index: -2; }
.ph-media img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.04); }
.page-hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(10, 8, 6, .55) 0%, rgba(10, 8, 6, .25) 35%, rgba(10, 8, 6, .82) 100%); }
.page-hero.is-plain::after { display: none; }
.ph-in { width: 100%; padding-block: calc(var(--mast) + 60px) clamp(40px, 6vw, 72px); }
.page-hero.is-plain .ph-in { padding-top: 0; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; font-size: .78rem; color: var(--on-dark-2); }
.crumbs a:hover { color: var(--gold-3); }
.crumbs span[aria-hidden] { opacity: .5; }
.page-hero h1 { max-width: 16em; }
.page-hero .h-xl em { color: var(--gold-2); }
.ph-lead { max-width: 38em; margin-top: 22px; font-size: 1.06rem; color: rgba(239, 231, 216, .86); }
.ph-num { position: absolute; right: var(--gutter); bottom: clamp(30px, 5vw, 64px); font: italic 300 clamp(5rem, 3rem + 8vw, 11rem)/.8 var(--serif); color: rgba(233, 211, 161, .18); pointer-events: none; }

.section { padding-block: clamp(64px, 8vw, 120px); }
.section-tight { padding-block: clamp(48px, 6vw, 84px); }
.bg-paper2 { background: var(--paper-2) var(--grain); }
.bg-ink { background: var(--ink-2); color: var(--on-dark); }
.split { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 6vw, 110px); align-items: start; }
.split > .sticky { position: sticky; top: 108px; }

/* Văn bản dài */
.prose { max-width: 720px; font-size: clamp(1.02rem, .98rem + .15vw, 1.1rem); line-height: 1.82; color: #2a231c; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { margin-top: 2em; font: 400 clamp(1.55rem, 1.2rem + 1vw, 2.1rem)/1.2 var(--serif); color: var(--text); scroll-margin-top: 100px; }
.prose h3 { margin-top: 1.6em; font: 500 1.25rem/1.3 var(--serif); }
.prose p.lead { font: 380 clamp(1.25rem, 1.05rem + .6vw, 1.55rem)/1.55 var(--serif); color: var(--text); }
.prose > p:first-of-type:not(.lead)::first-letter { float: left; font: 400 4.2em/.82 var(--serif); padding: .06em .1em 0 0; color: var(--son); }
.prose a { color: var(--son); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.prose a:hover { color: var(--cinnabar); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose ul li { list-style: none; position: relative; }
.prose ul li::before { content: ""; position: absolute; left: -1.1em; top: .78em; width: 6px; height: 6px; border: 1px solid var(--gold); transform: rotate(45deg); }
.prose ol li { list-style: decimal; }
.prose ol li[data-list="bullet"] { list-style: none; position: relative; }
.prose ol li[data-list="bullet"]::before { content: ""; position: absolute; left: -1.1em; top: .78em; width: 6px; height: 6px; border: 1px solid var(--gold); transform: rotate(45deg); }
.prose li.ql-indent-1 { margin-left: 1.5em; } .prose li.ql-indent-2 { margin-left: 3em; }
.emb-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.emb-split img { width: 100%; max-width: 300px; filter: drop-shadow(0 30px 50px rgba(0, 0, 0, .5)); }
.emb-split p { color: var(--on-dark-2); font-size: 1.05rem; }
.bg-ink .h-l em, .bg-ink .h-xl em { color: var(--gold-2); }
@media (max-width: 760px) { .emb-split { grid-template-columns: 1fr; } .emb-split img { max-width: 200px; } }
.prose li + li { margin-top: .45em; }
.prose blockquote { margin-block: 1.8em; padding: 6px 0 6px 28px; border-left: 2px solid var(--cinnabar); font: italic 380 clamp(1.25rem, 1.05rem + .6vw, 1.55rem)/1.5 var(--serif); color: var(--text); }
.prose img { width: 100%; margin-block: 1.6em; }
.prose figure figcaption { font-size: .82rem; color: var(--text-3); margin-top: 8px; }
.prose iframe { width: 100%; aspect-ratio: 16 / 9; height: auto; border: 0; }
.prose hr { border: 0; height: 1px; background: var(--line-2); margin-block: 2.4em; }
.prose .ql-align-center { text-align: center; }
.prose .ql-align-right { text-align: right; }
.prose table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align: left; }

/* Trang lĩnh vực */
.dm-intro { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 110px); }
.dm-tag { font: italic 360 clamp(1.6rem, 1.1rem + 1.6vw, 2.5rem)/1.3 var(--serif); color: var(--text); }
.dm-sum { font-size: 1.08rem; color: var(--text-2); }
.svc { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line-2); margin-top: clamp(40px, 5vw, 70px); }
.svc li { padding: 28px 28px 28px 0; border-bottom: 1px solid var(--line); counter-increment: svc; }
.svc li:nth-child(even) { padding-left: 28px; border-left: 1px solid var(--line); }
.svc h3 { display: flex; gap: 14px; align-items: baseline; font: 400 1.45rem/1.25 var(--serif); }
.svc h3::before { content: counter(svc, decimal-leading-zero); font: 500 .7rem/1 var(--sans); letter-spacing: .1em; color: var(--gold-ink); }
.svc p { margin-top: 8px; padding-left: 30px; color: var(--text-2); font-size: .95rem; }
.dm-nav { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-dark); }
.dm-nav a { display: grid; gap: 6px; padding: 34px 0; transition: color .3s; }
.dm-nav a + a { text-align: right; padding-left: 24px; border-left: 1px solid var(--line-dark); }
.dm-nav small { font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-2); }
.dm-nav span { font: 400 clamp(1.4rem, 1rem + 1.2vw, 2.2rem)/1.2 var(--serif); }
.dm-nav a:hover span { color: var(--gold-3); }

/* Sổ tay */
.book { display: grid; gap: 0; border-top: 1px solid var(--line-2); }
.notebook { border-bottom: 1px solid var(--line); }
.notebook summary { display: grid; grid-template-columns: 40px 1fr auto 24px; gap: 14px; align-items: center; padding: 22px 0; cursor: pointer; list-style: none; }
.notebook summary::-webkit-details-marker { display: none; }
.nb-no { font: 500 .72rem/1 var(--sans); letter-spacing: .1em; color: var(--gold-ink); }
.nb-title { font: 400 clamp(1.25rem, 1rem + .6vw, 1.6rem)/1.25 var(--serif); }
.nb-count { font-size: .78rem; color: var(--text-3); }
.notebook .ic { transition: transform .4s var(--ease); }
.notebook[open] summary .ic { transform: rotate(45deg); }
.nb-body { padding: 0 0 26px 54px; }
.nb-body li + li { margin-top: 4px; }
.nb-body label { display: flex; gap: 14px; align-items: flex-start; padding: 8px 0; cursor: pointer; }
.nb-body input { appearance: none; -webkit-appearance: none; flex: none; width: 20px; height: 20px; margin: 3px 0 0; border: 1px solid var(--line-2); background: #fff8; display: grid; place-items: center; cursor: pointer; transition: background-color .25s, border-color .25s; }
.nb-body input::after { content: ""; width: 10px; height: 6px; border: solid var(--paper); border-width: 0 0 2px 2px; transform: rotate(-45deg) translate(1px, -1px) scale(0); transition: transform .25s var(--ease); }
.nb-body input:checked { background: var(--son); border-color: var(--son); }
.nb-body input:checked::after { transform: rotate(-45deg) translate(1px, -1px) scale(1); }
.nb-body input:checked + span { color: var(--text-3); text-decoration: line-through; text-decoration-color: var(--gold); }
.nb-tools { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 24px; font-size: .85rem; }
.nb-tools button { display: inline-flex; align-items: center; gap: 8px; }
.nb-tools button:hover { color: var(--son); }

/* Danh sách dự án */
.pj-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(40px, 5vw, 72px) clamp(20px, 3vw, 40px); }
.pj-card { grid-column: span 6; display: grid; gap: 16px; }
.pj-card:first-child { grid-column: 1 / -1; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); align-items: end; gap: clamp(24px, 4vw, 56px); }
.pj-img { aspect-ratio: 16 / 10; overflow: hidden; background: var(--paper-3); display: block; }
.pj-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease-out); }
.pj-card:hover .pj-img img { transform: scale(1.04); }
.pj-card h2 a:hover { color: var(--son); }
.pj-card p { color: var(--text-2); }
.pj-card .chip { justify-self: start; }
.pj-body { display: grid; gap: 14px; }
.empty { padding: 60px 0; text-align: center; color: var(--text-2); }
.empty .h-m { color: var(--text); margin-bottom: 10px; }

/* Chi tiết dự án */
.pjd-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); border-top: 1px solid var(--line-dark); }
.pjd-facts div { padding: 22px 22px 22px 0; border-bottom: 1px solid var(--line-dark); }
.pjd-facts dt { font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-2); }
.pjd-facts dd { margin-top: 6px; font: 400 1.2rem/1.3 var(--serif); color: var(--on-dark); }
.gallery { display: grid; grid-template-columns: repeat(12, 1fr); gap: 12px; }
.gallery a { position: relative; overflow: hidden; background: var(--paper-3); grid-column: span 4; aspect-ratio: 4 / 3; cursor: zoom-in; }
.gallery a:nth-child(5n+1) { grid-column: span 8; grid-row: span 2; aspect-ratio: auto; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease-out); }
.gallery a:hover img { transform: scale(1.04); }
.map-embed { aspect-ratio: 16 / 7; width: 100%; border: 0; filter: grayscale(.4) sepia(.2); }
.lightbox { position: fixed; inset: 0; z-index: 120; display: grid; place-items: center; background: rgba(12, 9, 7, .94); padding: 60px 20px; }
.lightbox img { max-height: 84vh; width: auto; max-width: 100%; object-fit: contain; box-shadow: 0 30px 80px rgba(0, 0, 0, .6); }
.lightbox button { position: absolute; color: var(--on-dark); padding: 14px; }
.lb-close { top: 10px; right: 10px; }
.lb-prev { left: 6px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 6px; top: 50%; transform: translateY(-50%); }
.lb-cap { position: absolute; bottom: 18px; left: 0; right: 0; text-align: center; color: var(--on-dark-2); font-size: .85rem; }

/* Tin tức */
.cats { display: flex; flex-wrap: wrap; gap: 6px 26px; border-bottom: 1px solid var(--line-2); margin-bottom: clamp(36px, 5vw, 60px); }
.cats a { position: relative; padding: 16px 0; font-size: .9rem; color: var(--text-2); }
.cats a sup { font-size: .65rem; color: var(--gold-ink); margin-left: 3px; }
.cats a[aria-current="page"] { color: var(--text); }
.cats a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--son); }
.nw-lead { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(28px, 4vw, 64px); align-items: center; padding-bottom: clamp(40px, 5vw, 70px); margin-bottom: clamp(40px, 5vw, 70px); border-bottom: 1px solid var(--line-2); }
.nw-lead .nh-img { margin: 0; aspect-ratio: 16 / 10; }
.nw-lead .h-l a:hover { color: var(--son); }
.nw-lead p.ex { margin-top: 16px; color: var(--text-2); }
.nw-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(36px, 4vw, 56px) clamp(20px, 3vw, 40px); }
.nw-card { display: grid; gap: 12px; align-content: start; }
.nw-card .nh-img { margin: 0 0 6px; aspect-ratio: 3 / 2; }
.nw-card h2, .nw-card h3 { font: 400 1.35rem/1.3 var(--serif); }
.nw-card h2 a:hover, .nw-card h3 a:hover { color: var(--son); }
.nw-card p:last-child { font-size: .92rem; color: var(--text-2); }
.pager { display: flex; justify-content: center; gap: 6px; margin-top: clamp(48px, 6vw, 80px); }
.pager a, .pager span { min-width: 44px; height: 44px; display: grid; place-items: center; padding: 0 12px; border: 1px solid var(--line); font-size: .9rem; }
.pager a:hover { border-color: var(--text); }
.pager [aria-current] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Bài viết */
.post-head { padding-top: calc(var(--mast) + clamp(48px, 7vw, 100px)); background: var(--paper) var(--grain); }
.post-head .crumbs { color: var(--text-3); }
.post-head .crumbs a:hover { color: var(--son); }
.post-title { max-width: 18em; }
.post-ex { max-width: 36em; margin-top: 22px; font: 380 clamp(1.15rem, 1rem + .5vw, 1.4rem)/1.55 var(--serif); color: var(--text-2); }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 26px; margin-top: 30px; padding: 18px 0; border-block: 1px solid var(--line); font-size: .85rem; color: var(--text-2); }
.post-meta strong { font-weight: 500; color: var(--text); }
.post-cover { margin-top: clamp(30px, 4vw, 56px); aspect-ratio: 21 / 10; overflow: hidden; background: var(--paper-3); }
.post-cover img { width: 100%; height: 100%; object-fit: cover; }
.post-body { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: clamp(32px, 5vw, 80px); padding-block: clamp(48px, 6vw, 90px); }
.toc { position: sticky; top: 100px; align-self: start; font-size: .86rem; }
.toc p { margin-bottom: 14px; }
.toc a { display: block; padding: 7px 0 7px 14px; border-left: 1px solid var(--line); color: var(--text-3); transition: color .25s, border-color .25s; }
.toc a:hover, .toc a.on { color: var(--text); border-color: var(--son); }
.share { display: flex; gap: 8px; margin-top: 30px; }
.share a, .share button { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid var(--line); transition: border-color .25s, color .25s; }
.share a:hover, .share button:hover { border-color: var(--son); color: var(--son); }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-2); margin-top: 60px; }
.post-nav a { padding: 26px 0; display: grid; gap: 6px; }
.post-nav a + a { text-align: right; border-left: 1px solid var(--line); padding-left: 24px; }
.post-nav small { font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold-ink); }
.post-nav span { font: 400 1.15rem/1.35 var(--serif); }
.post-nav a:hover span { color: var(--son); }
.preview-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; padding: 12px var(--gutter); background: var(--cinnabar); color: #fff; font-size: .88rem; display: flex; justify-content: space-between; gap: 12px; }

/* Liên hệ */
.ct-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(36px, 6vw, 110px); align-items: start; }
.ct-info { display: grid; gap: 0; border-top: 1px solid var(--line-2); }
.ct-info > div { display: grid; grid-template-columns: 34px 1fr; gap: 14px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.ct-info .ic { width: 22px; height: 22px; color: var(--gold); margin-top: 3px; }
.ct-info dt { font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: var(--text-3); }
.ct-info dd { margin-top: 4px; font: 400 1.25rem/1.4 var(--serif); }
.ct-info dd a:hover { color: var(--son); }
.ct-note { margin-top: 24px; font-size: .88rem; color: var(--text-2); }
.form-paper { padding: clamp(26px, 4vw, 54px); background: #fbf8f2; border: 1px solid var(--line); box-shadow: 0 30px 60px -40px rgba(40, 25, 10, .35); }
.form-paper .fld { color: var(--text-2); }
.form-paper .fld input, .form-paper .fld textarea, .form-paper .fld select { background: #fff; color: var(--text); border-color: var(--line-2); }
.form-paper .fld input:focus, .form-paper .fld textarea:focus, .form-paper .fld select:focus { border-color: var(--son); background: #fff; }
.form-paper .chk { color: var(--text-2); }
.form-paper .chk input { accent-color: var(--son); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.fld textarea { min-height: 140px; resize: vertical; }
.alert { padding: 14px 18px; margin-bottom: 20px; font-size: .92rem; border-left: 3px solid; }
.alert-ok { background: #eef4e6; border-color: #5c8a3a; color: #2f4a1e; }
.alert-err { background: #fbece7; border-color: var(--cinnabar); color: #7a1d12; }

/* Lỗi 404 */
.err-page { min-height: 100vh; min-height: 100svh; display: grid; place-items: center; text-align: center; color: var(--on-dark); background: var(--ink); position: relative; overflow: hidden; isolation: isolate; }
.err-page .ph-media img { opacity: .35; }
.err-page .h-xl em { color: var(--gold-2); }
.err-page p { max-width: 30em; margin: 18px auto 30px; color: var(--on-dark-2); }

/* ═══ Hiệu ứng xuất hiện ═════════════════════════════════════ */
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity 1s var(--ease-out), transform 1.2s var(--ease-out); transition-delay: var(--d, 0ms); }
.js .reveal.in { opacity: 1; transform: none; }
.js .reveal-clip { clip-path: inset(12% 6% 12% 6%); transition: clip-path 1.5s var(--ease-out); }
.js .reveal-clip img { transform: translate3d(0, var(--py, -5%), 0) scale(1.18); transition: transform 1.8s var(--ease-out); }
.js .reveal-clip.in { clip-path: inset(0 0 0 0); }
.js .reveal-clip.in img { transform: translate3d(0, var(--py, -5%), 0) scale(1.001); }

@keyframes spin { to { transform: rotate(360deg); } }
/* Nếu mã giao diện không tải được, nội dung vẫn hiện sau 3 giây. */
.js:not(.js-ok) [data-intro], .js:not(.js-ok) .reveal, .js:not(.js-ok) .hero-title .ln > * { animation: failsafe .6s 3s forwards; }
.js:not(.js-ok) .reveal-clip { animation: failsafeClip .6s 3s forwards; }
.js:not(.js-ok) .mf-text .w { color: var(--text); }
@keyframes failsafe { to { opacity: 1; transform: none; } }
@keyframes failsafeClip { to { clip-path: inset(0); } }

/* ═══ Màn hình vừa ═══════════════════════════════════════════ */
@media (max-width: 1180px) {
  .nav { gap: 20px; }
  .mega-in { grid-template-columns: repeat(4, 1fr); }
  .mega-note { display: none; }
  .mast-tel small { display: none; }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .ch-body { grid-template-columns: 1fr; }
  .ch-sum, .ch-items, .ch-links { grid-column: 1; grid-row: auto; }
}
@media (max-width: 980px) {
  :root { --mast: 68px; }
  .nav, .mast-tel span, .mast-care span { display: none; }
  .mast-tel, .mast-care { padding: 10px; }
  .menu-btn { display: inline-flex; }
  .mast-act { margin-left: auto; }
  .brand-emblem { width: 40px; height: 40px; }
  .brand-word { height: 18px; }
  .mf-grid, .eco-grid, .eco-head, .split, .jr-grid, .nh-grid, .proj-feature, .ct-grid, .dm-intro, .post-body, .nw-lead { grid-template-columns: 1fr; }
  .mf-side { position: static; display: grid; grid-template-columns: 120px 1fr; gap: 0 22px; align-items: center; }
  .mf-side .label { grid-column: 1 / -1; }
  .mf-emblem { width: 120px; margin: 0; }
  .eco-index { position: relative; top: 0; display: none; }
  .ch-body { grid-template-columns: 1fr; }
  .jr-aside, .split > .sticky, .toc { position: relative; top: 0; }
  .toc { display: none; }
  .pj-card, .pj-card:first-child { grid-column: 1 / -1; grid-template-columns: 1fr; }
  .nw-grid { grid-template-columns: 1fr 1fr; }
  .hero-seal { margin-right: 0; }
  .taiji { height: 360vh; }
  .taiji-stage { --S: min(92vw, 52vh); left: 50%; top: calc(var(--mast) + 4vh + var(--S) / 2); }
  .taiji-copy { align-items: flex-end; padding-bottom: 72px; }
  .tj-step { width: auto; left: var(--gutter); right: var(--gutter); }
  .tj-step .h-xl { font-size: clamp(2rem, 1.2rem + 3.6vw, 2.8rem); }
  .tj-step > p:not(.label) { font-size: .95rem; margin-top: 12px; }
  .wx-list { grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 14px; }
  .wx-list button { grid-template-columns: 1fr; justify-items: center; gap: 6px; padding: 10px 0; text-align: center; }
  .wx-list span { display: none; }
  .wx-list li.on button, .wx-list button:hover { padding-left: 0; }
  .tj-progress { bottom: 26px; }
  .lp-names { display: none; }
  .gua span { font-size: .52rem; letter-spacing: .1em; }
  .gua b { font-size: .82rem; }
  .gua li { transform: rotate(var(--a)) translateY(calc(var(--S) * -.36)) rotate(calc(-1 * var(--a))); }
  .call-fab { display: inline-flex; }
}
@media (max-width: 760px) {
  body { font-size: .98rem; }
  .hero { grid-template-rows: 1fr auto; }
  .hero-media img { object-position: 50% 30%; }
  .hero-shade { background: linear-gradient(180deg, rgba(8, 9, 7, .35) 0%, transparent 25%, rgba(8, 9, 7, .45) 50%, rgba(8, 9, 7, .92) 82%); }
  .hero-body { align-items: flex-end; padding-bottom: 26px; }
  .hero-title { font-size: clamp(2.7rem, 11.5vw, 4rem); }
  .hero-lead { font-size: .98rem; margin-top: 18px; }
  .hero-actions { margin-top: 26px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .hero-seal { left: auto; right: 0; top: -70px; width: 30px; }
  .hero-index { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; padding-right: 0; }
  .hero-index::-webkit-scrollbar { display: none; }
  .hero-index a { flex: 0 0 64%; scroll-snap-align: start; padding: 16px 16px 16px 0; }
  .hero-index a + a { padding-left: 16px; }
  .hero-foot { display: none; }
  .values { grid-template-columns: 1fr; }
  .values li, .values li + li { padding: 22px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .ch-items { grid-template-columns: 1fr; }
  .ch-fig figcaption span:last-child { font-size: .86rem; }
  .sec-head { flex-direction: column; align-items: flex-start; }
  .proj-rows a { grid-template-columns: 40px 1fr 20px; gap: 14px; }
  .pr-stage, .pr-thumb { display: none; }
  .jr-steps { padding-left: 44px; }
  .jr-dot { left: -35px; }
  .jr-line { left: -8px; }
  .nh-list li { grid-template-columns: 1fr 84px; gap: 16px; }
  .nw-grid { grid-template-columns: 1fr; }
  .svc { grid-template-columns: 1fr; }
  .svc li, .svc li:nth-child(even) { padding: 22px 0; border-left: 0; }
  .form-grid { grid-template-columns: 1fr; }
  .foot-top { grid-template-columns: 1fr; gap: 34px; }
  .foot-base { flex-direction: column; padding-bottom: 90px; }
  .gallery a, .gallery a:nth-child(5n+1) { grid-column: 1 / -1; grid-row: auto; aspect-ratio: 4 / 3; }
  .dm-nav { grid-template-columns: 1fr; }
  .dm-nav a + a { text-align: left; padding-left: 0; border-left: 0; border-top: 1px solid var(--line-dark); }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav a + a { text-align: left; padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .post-cover { aspect-ratio: 4 / 3; }
  .nb-body { padding-left: 0; }
  .notebook summary { grid-template-columns: 30px 1fr 24px; }
  .nb-count { display: none; }
  .ph-num { display: none; }
  .gate-note { display: none; }
  .gate-center { gap: 12px; }
  .gate-logo .brand-word { height: 16px; }
}
@media (max-width: 380px) {
  .hero-title { font-size: 2.55rem; }
  .btn { padding: 0 18px; }
  .gate-title { font-size: 2.15rem; }
}

/* ═══ Giảm chuyển động / máy yếu ═════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js .reveal, .js [data-intro], .js .hero-title .ln[data-intro] > * { opacity: 1; transform: none; }
  .js .reveal-clip { clip-path: none; }
  .js .mf-text .w { color: var(--text); }
  .hero-mist { display: none; }
}
html.lite .js .reveal-clip, html.lite .reveal-clip { clip-path: none !important; }

/* ═══ In ════════════════════════════════════════════════════ */
@media print {
  .mast, .menu, .gate, .foot, .cta, .call-fab, .share, .post-nav, .hero-index, .nb-tools, .toc { display: none !important; }
  body { background: #fff; color: #000; }
  .page-hero, .post-head { min-height: 0; padding: 0; background: none; color: #000; }
  .page-hero::after, .ph-media { display: none; }
  .notebook:not([open]) { display: none; }
}